Type-writing machine.



H. H. STEELE.

T YPE WRITING MACHINE. APPLICATION FILED AUG. 15, 1912 Patented Jan. 14, 1913.-

WITNE EEE 57%M mob mumnm TTDR'NEY H. H STEELE. TYPE WRITING MACHINE.

APPLICATION FILED AUG. 15, 1912.

Patented J an. 14, 1913.

2 SHEETS-SHEET 2.

INVENTEIR= JW Mam.-

. a BE WITNESSES:

Jim/L HIEATTEIRNEY UNITED STATES PATENT OFFICE.

HERBERT H. STEELE, OF MARCELLUS, NEW YORK, ASSIGNOR TO THE MONARCH TYPE- WBITER, COMPANY, OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

I Specification of Letters Patent.

Patented J an. 14, 1913.

To all whom it may concern:

Be it known that I, HERBERT H. STEELE, citizen of the United States, and resident of Marcellus, in the county of Onondaga and State of New York, have invented certain new and useful Improvements in Type- Writing Machines, ofwhieh the following is a specification.

My invention relates to supporting elements or carriages for the platens of typewriting machines and its general object is to provide improved devices of the character specified. p

More specifically the object is to provide a platen carrier or carriage comprising two parts one of which is mounted to move lengthwise of the other and of the platen during the letter space movements, the speed of the two parts being dili'erentiat'ed so that the main or primary part which is supported on a stationary guide may travel a less extent than the secondary part. The result is that among other advantages my invention enables comparatively short stationary guides or guide rails to be employed for a long carriage. For example, the regular length of guide rail of the Monarch inachine may be employed foall lengths of platens and platen frames up to a 16 inch platen.

To theabove and other ends my invention consists in the features of construction, combinations of devices and arrangements of parts to be hereinafter described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 illustrates a transverse sectional view of a platen carrier or carriage embodying my invention, the stationary mounting of the carriage and associate parts being also shown.

Fig. 2 is a fragmentary front elevation of said carnage, its mounting and associate parts. Fig. 3 is a fragmentary plan view of said carriage. Fig. 4- is a view corresponding to Fig. 1 but showing a modification. Fig. 5 is a fragmentary front elevation of the parts shown in Fig. 4. y,

In the drawings the machine to which my invention is shown is generally like the Monarch typewriter but it is to be unden stood that said invention may readily be adapted to other styles of writing machines.

The main frame of the machine comprises a top plate 1 supported on posts 2. Rising from said top plate are standards 3 to which are suitably secured fined guide rails 4.

The guide rails herein shown are of ordinary length, that is, about 12 inches and are oppositely grooved as indicated at 5 to cooperate with anti-friction rollers 6. Through these rollers (3 the stationary guides or guide rails 4 cooperate with a platen supporting member, carrier or carriage which comprises chiefly two parts or trucks, one of which. is a. primary truck and the other a secondary truck, the latter being supported on the primary truck through an interposed roller bearing, another roller bearing, namely, that composed of the rollers 6, being interposed directly between the stationary guides t and the primary truck. \Vhile it may be made of a single member or bar this primary truck for convenience of manufacture is preferably composed of two rods or bars 7 and 8. These bars are arranged one above the other and are provided with oppositelyprojecting lugs 9 which are perforated to receive vertical connecting pins 10. These pins may be secured to the lugs 9 of the upper bar 7 by small cross pins 11 driven transversely through said lugs 9 and pins 10. At the lugs 9 of the lower bar 8 the pins 10 may be secured by set screws 12 which afford a ready detachment of the two members 7 and 8 composing the primary truck and also enable thcse members to be quickly assembled.

The upper face of the truck bar 7 is grooved as indicated at 13 to cooperate with the upper rollers 6 While the bottom face of the bar 8 is grooved as indicated at 14: to coopcrate with the lower rollers 6. The primafy truck 7. 8 is thus connected with the stationary guides 4 so as to move readily 1engthwise thereof.

Suitably secured to the front faces of the bars 7 and 8 as by screws 15 are oppositely projecting guide members 16, the opposite horizontal faces of which are formed with V grooves 17 to receive anti-friction rollers 18. These anti-friction rollers cooperate with \l-grooves 19 formed in the opposite faces of a secondary truck or slide bar 20, the secondary truck being thus connected with the primary truck so that relative endwise movement between them may take place. In the present instance this secondary truck may be of substantially the same length as the primary truck and this length may correspond with the length of "the stationary guide rails 4. The truck 20 is provided near its ends with forwardly extending lugs 21 which are formed with notches or slots 22 open at the top and thus constitute hangers for a detachable platen frame.

-A similar forwardly projecting lug 23 is arranged centrally of the truck near its lower end and is provided with a notch or slot-24. The platen frame comprises end bars 25 which are connected by cross rods or bars 26 and 27, the cross bars and end plates being suitably connected so that the arts are rigid with respect to each other. or example, the end bars 25 may be provided with inwardly projecting bosses or lugs 25* formed with depressions which receive the ends of the rods 26 and 27, pins 25" securely connecting the rods 26 and 27 and end bars 25 which thus constitute a U- shaped frame of which the rods 26 and 27 are adapted to fit into the notched hangers or in s 21 and 23, the frame being thus detacha ly supported on the secondary truck 20. The end bars 25 provide bearings for the axle 28 of a rotary platen 29 which may be ofordinary construction and provided with suitable line spacing devices. Finger wheels 30 fixed to the ends of the axle 28 may also be used for turning the platen for line spacing or other purposes.

Suitable paper feeding devices may be provided to cooperate with the platen 29. As herein shown these paper feeding devices comprise rollers 31 and 32 mounted on hangers 33 pivoted at 34 to supporting arms 35 which extend upward behind the platen and may be mounted on the cross rod 26. The platen shown herin is one of the longer style or kind, being considerably longer than the secondary truck 20. To prevent endwise movement of the platen on said truck and to definitely locate the platen lengtlnvise thereof, collars 36 may be suitably secured to the rod 26, said collars being spaced apart to cooperate with the outer faces of the hangers or lugs 21, the collars co-acting with the hangers to prevent the long platen frame from being slid lengthwise of and displaced on the relatively short truck 20. It will be seen that various lengths of platens and platen frames may be employed with the same carriage or carrier comprising the trucks 20 and 7 S and that one platen and platen frame with its platen may readily be detached by lifting it out of the lugs or hangers 21 and 23 and another platen of different length quickly substituted.

The primary and secondary trucks are combined with positive connecting devices through which their relationslnp is at all times rendered adefinite one and accidental relative movement between said trucks is avoided. In the present instance the connecting devices comprise a gear connection or devices, and parts of this connection are so proportioned and related that the two trucks are differentially spaced or fed lengthwise of each other and of the platen. The gear connection is supported on the primary truck by means of a journal bearing 37 which is fixed to the top of the upper guide member 16 midway of its length and provides a bearin for a shaft 38. Fixed to the front end of his shaft is a spur gear 39 which meshes constantly with the upwardly projecting teeth of a rack bar 40 that is secured to lugs 41 on the truck 20 and extends lengthwise of said truck, projecting somewhat above the same. Fixed to the rear end of the shaft 38 is a spur gear 42 half the size of the gear 89. The gear 42 meshes constantly with the downwardly pro jecting teeth of astationary rack bar 43,said rack bar being secured by screws 44 to lugs 45 on the upper fixed guide rail 4. It will be understood that if an impulse be communicated to the secondary truck-2O to cause it and the platen which it carries to move a definite distance, this impulse will be transmitted through the rack bar 40 to the gear 39 and through it to the gear 42. Since this gear 4-2 meshes with a stationary rack or member 4 the result will be that the movable member or primary truck 7, 8 on which the two gears are mounted will be forced to move in response to said. impulse and owing to the relationship of the two gears the impulse imparted to the primary truck will move it only half as far as the secondary truck and platen were moved. In other words, by means of the gear connection a step-by-step moven'lent imparted to the secondary truck and platen will be simultaneously transmitted to the primary truck which will also more but the movement of the two trucks will be a differential movement, the primary truck moving only half the extent and at half the SXEOd of the secondary truck and. platen. I will be understood tberefore that if, say, a long 16 inch platen be mounted on the secondary truck, it may be moved stcp-by-step past the printing point throughout its length, while the primary truck will be moving only substantially half this distance or some 8 inches.

The impulses or feeding movements may be comnmnicated to the secondary truck and platen by ordh'lary means as by a carriage motor or spring drum 46 having a fixed pivot {17 and connected through a band or strap -18 with a pin 4:9 fixed to and extending downward from the right-hand end bar 25 of the platen frame. In order to control the n'lovements of the platen and its carriage in printing direction, letter feeding or oscapement devices are provided which are of suitable constructimi and may, for example, be like, those found in the Monarchmachine. Said devices comprise a releasable feed rack 50 secured to arms 51 which are pivotally mounted on the platen frame. For example, said arms may be provided Withhubs 51* which are journaled on the platen frame rod 27 and confined loosely between the lugs 25 at the ends of said rod. The feed rack 50 is normally maintained in spring pressed engagement With a feed pinion 52 secured to the front end of a shaft 53 which is journaled on a bracket 54 secured to the top plate. Operatively connected to the shaft 53 at its rear is a toothed escapement wheel 55 with which cooperate feed dogs 56 and 57 mounted at the top of a carrier or rocker 58 which is operative from the printing key levers in any suitable way as, for example, that shown in the Monarch machine. The pull of the spring drum 46 is exerted through the strap 48 directly on the platen frame and the secondary truck 20 and is transmitted from said truck 20 through the rack bar 40 and the gear connection 39, 42 to the primary truck. Assuming that when the eseapement mechanism is operated the platen and the secondary truck will ad vance the distance of a letter space toward the left, then the primary truck will simultaneously advance approximately onehalf of said letter space distance. \Vhatever aggregate distance theletter space movements of the carriage and secondary truck amounts to, the movement of the primary truck will be only half such distance. Of course, the relative movement between the two trucks may be varied at will by ,varying the ratio'betwcen the gears 39 and 42 comprised in the gear connection. If very long platens are enn'iloyed, for example, it may he found desirable to increase the diti'crence in movem'rnt between then trucks so that the increase in length oi the fixed giiii-de rails may be minimized.

Various changes may be made without departing from my invention. For example. in Figs. 4 and 5 l have shown a modified construction which generally l'tSQlHliltS the first described construction but further shows an additional support for the secondary truck and platen tramo. vSaid additional support conn'n'iscs a track bar 5.) which extends lengthwise oi on; secondary truck below and forward of the same and is provided at its ends with upstanding cars 60 which are secured by screws 31. to

lugs 62 projecting from the lower part oi the secondary truck. The track bar 59 is movable, traveling with the secondary truch and platen and cooperates with a guide having a fixed support or a support on the machine frame, said guide in the present instance comprising one or more small wheels or rollers (33 pivoted at (lion lugs 5 depending from the top plate, said rollers projecting upward through openings l in said top plate for cooperation with the track bar or guide 59. Various other changes besides the ones described may be made without departing from the present invention which it will be observed enables interchangeable platens of different lengths to be readily en'lployed with a machine provided with a fixed guide or guide ways of standard or ordinary length, thus doing away with the need of a set of guide ways corresponding with the different lengths of platens and lessening the expense arising from the provision of such additional ways and from the time and care required in adjllStll'lg the ditl'crentparts.

Other advantages will suggest themselves to those skilled in this art.

hat I claim as new and desire to secure by Letters Patent, is:

1. In a typcwriting machine the combination of a platen and a platen carrier comprising two parts relatively movable step by step simultaneously lengthwise of the platen.

2. In a typewriting machine, the combination of a platen and a platen carrier comprising two parts relatively movable step by step sinmltaneously lengthwise of the platen, one of said parts being supported by the other.

1n n typewriting machine, the combination of a platen, a platen carrier comprising two parts relatively movable in the direction of the length of" the platen, and

means for regulating the relative.movement between said parts, whereby onebf'said parts has a slower movement than the other.

4. In a typewriting machine, the combination of a platen, a platen supporting element. comprising a slide, bar, a member on which said slide bar in turn is supported, and means coimccted with said platen supporting element for moving said member in the direction of the platen travel.

5. in a tvpewriting machine, the combination ol a platen, a platen supporting elementcomprising a slide bar, a member on which said slide bar is sup'pmtod, and n ans connected with said platen supporting cle mcnt'i'or moving said member in the direction of the platen travel, said means regulating the relative speed of said supp tu-ting element. and of said member.

I v l 6. in a typewriting 1l"|:1('lllll(. the combination of a. platen, a platen carrier 'cptn'prismg two parts relatively movable in' the d1' rection of the length of the platen, and

means positively connecting said parts; and I regulatingthe relationship l'ictween them.

7. ln a typewriting"machine, the comhination of a platen, a platen carrier comprising two parts relatively movable in the direction of the length of the platen, and a gear connection between said two parts.

8. In a typewrit-ing machine the combination of a platen, a platen ("flier eomprising two parts 'elat'ively movable, and gearing connecting one of said parts with a stationar part of the machine and also with the ot er of said parts.

9. In a typewriting machine, the combination of a platen, a platen carrier comprising two parts relatively movable lengthwise of the laten, and a roller bearing interposed between said two parts.

10. In a typewriting machine, the combi nation of a platen, a platen carrier comprising two parts relatively movable lengthwise of the platen, a roller bearing interposed between said two parts, a static-nary track way, and a second roller bearing interposed between one of said parts and said stationary track way.

11. In a typewriting machine, the combination of a platen, a platen support comprising relatively movable trucks, and a positive connection between said trucks.

12. In a typewriting machine, the combination of a platen, a platen support comprising relatively movable trucks, roller bearings between said trucks, a stationary track way, and a roller bearing between said track way and said platen support.

13. In a typewriting machine, the combination of a platen, a platen support comprising relatively movable trucks, and means for regulating the speed of movement of said trucks in respect of each other.

14. In a typewriting machine, the combination of a platen, a platen support comprising relatively movable trucks, and means for compelling one of said trucks to travel at a less speed than the other.

15. In a typewriting machine, the combination of a stationary guide, a truck movably mounted to travel along said guide, a second truck mounted to travel along on the first truck, and a platen supported from said second truck, the two trucks being arranged to move step by step together but at different speeds.

16. In a typewritiug machine, the combination of a stationary guide, a primary truck mounted thereon, a secondary truck mounted on the primary truck, a platen supported on the secondary truck, means for feeding the second .truck letter space distances, and means for simultaneously teeding the primary truck less distances.

17 In a typewriting machine, the combination of a stationary guide, a truck movably mounted on said guide, a second truck I movably mounted on the first named truck,

and a platen supported from said second truck, the two trucks being arranged to move step by step together but at diflerent speeds. v

18. In a typewriting machine, the combination of a guide member fixed to the machine frame, a truck movably mounted on said guide member, a second truck movably .mounted on the first named truck, a platen supported from said second truck, and means for controlling the relationship between the two trucks, the two trucks being arranged to move step by step together but at difi'erent speeds.

. 19. In a typewriting machine, the combination of a truck, a roller bearing for supporting and guiding said truck on the machine frame, a second truck, a roller bearing for guiding and supporting the second truck on the first truck, and a platen detachably mounted on said second truck.

20. In a typewriting machine, the combination of a platen,,a platen carrier comprising a primary truck and a secondary truck supported on the primary truck, and gearing connecting the primary truck with a stationary part and with the secondary truck to control the travel of one of said trucks.

21. In a typewriting machine, the combination of a platen, a platen carrier comprising two relatively movable parts, letter feeding devices for one of said parts, and means for transmitting the letter feed movement differentially to the other of said parts.

22. In a typewriting machine, the combination of a platen, a platen carrier comprising two parts relatively movable lengthwise of the platen, and means for simultaneously moving said parts differentially step by step.

23. In a typewriting machine, the combination of a stationary guide, a primary truck movable therealong, a secondary truck mounted to travel alongon said primary truck, a platen, and a platen frame detachably mounted on said secondary truck.

24. In a typewriting machine, the combination of a stationary guide, a primary truck movable therealong, a secondarytruck mounted to travel along on said primary truck, a platen on said secondary truck, a feed rack on said secondary truck, escapemeut devices cooperative with said feed rack, motor connected with said secondary truck, and means for transmitting the impulse of said motor from the secondary truck to the primary truck.

25. In a typewrit'ing machine, the combination of a stationary guide, a primary truck movable therealong, a' secondary truck mounted to travel along on said primary truck, a platen on said secondary truck, a

feed rack on said secondary truck, escapement devices cooperative with said feed rack, a motor connected with said secondary truck, and a gear connection between said secondary truck and said primary truck.

26. In a typewriting machine, the combination of a stationary guide, a primary truck movable therealong, a secondary truck mounted to travel along on said primary truck, a platen on said secondary truck, a feed rack on said secondary truck, escapement devices cooperative with said feed rack, a member connected with said secondary truck two gears mounted on said primary tIllCii, a stationary rack meshing with one of said gears, and a rack on said secondary truck meshing with the other of said gears.

27.In a typewriting machine, the combination of a stationary guide, a primary 'truck movably mounted on said guide, a secondary truck movably mounted on the primary truck, a platen on said secondary truck, and a guide having a stationarysupport with which said secondary truck cooperates.

28. Ina typewriting machine, the combination of a stationary guide, a rimary truck, a roller bearing interposed etween said guide and said truck, a secondary truck movably mounted on the first named truck,

a platen on said secondary truck, and a 20 guide having a stationary support with which said secondary truck cooperates 29. In a typewrit ng machine; the combination of a stationary guide, a rimary truck, a roller bearing interposed etween 25 said stationary guide and said primary truck, a secondary truck, a second roller bearing interposed between the two trucks, a platen on said secondary truck, and a guide having a stationary support with which said secondary truck cotper'ates. Signed at Syracuse, in the county of Onondaga, and State of New York, this 13th day of August A. D. 1912.

, HERBERT H. STEELE;

Witnesses H. BARRY, Bnssn G. KITTELL. 

